Re: [PATCH] checkpatch: Remove obsolete period from "ambiguous SHA1" query

From: Joe Perches
Date: Fri Aug 30 2019 - 14:29:58 EST


On Fri, 2019-08-30 at 11:01 -0700, Joe Perches wrote:
> On Fri, 2019-08-30 at 10:17 -0700, Sean Christopherson wrote:
> > On Fri, Aug 30, 2019 at 09:37:51AM -0700, Joe Perches wrote:
> > > On Fri, 2019-08-30 at 09:31 -0700, Sean Christopherson wrote:
> > > > Git dropped the period from its "ambiguous SHA1" error message in commit
> > > > 0c99171ad2 ("get_short_sha1: mark ambiguity error for translation"),
> > > > circa 2016. Drop the period from checkpatch's associated query so as to
> > > > match both the old and new error messages.
> > > >
> > > > Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> > > > ---
> > > > scripts/checkpatch.pl | 2 +-
> > > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > > > index 93a7edfe0f05..ef3642c53100 100755
> > > > --- a/scripts/checkpatch.pl
> > > > +++ b/scripts/checkpatch.pl
> > > > @@ -962,7 +962,7 @@ sub git_commit_info {
> > > >
> > > > return ($id, $desc) if ($#lines < 0);
> > > >
> > > > - if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous\./) {
> > > > + if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
> > > > # Maybe one day convert this block of bash into something that returns
> > > > # all matching commit ids, but it's very slow...
> > > > #
> > >
> > > Thanks.
> > >
> > > Did git ever change to actually support human readable
> > > messages in multiple languages?
> >
> > Yep, e.g.:
> >
> > error: Kurzer SHA-1 745f ist mehrdeutig.
> >
> > > If so, this won't work for non-english output.
> >
> > Yep again. The next check for 'fatal: ambiguous argument' obviously fails
> > as well and checkpatch ends up using git's error message as the id and
> > description.
> >
> > ERROR: Please use git ... - ie: 'commit error: Kurze ("")'
>
> Does git exit with unique failure codes?
> If so, maybe the waitid/siginfo_t error could be used instead.
>

Maybe something like this works?
---
scripts/checkpatch.pl | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f4b6127ff469..dc001b7899ed 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -62,6 +62,7 @@ my $conststructsfile = "$D/const_structs.checkpatch";
my $typedefsfile = "";
my $color = "auto";
my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
+my $git_command ='export LANG=en_US.utf-8; git';

sub help {
my ($exitcode) = @_;
@@ -918,7 +919,7 @@ sub seed_camelcase_includes {
$camelcase_seeded = 1;

if (-e ".git") {
- my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
+ my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
chomp $git_last_include_commit;
$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
} else {
@@ -946,7 +947,7 @@ sub seed_camelcase_includes {
}

if (-e ".git") {
- $files = `git ls-files "include/*.h"`;
+ $files = `${git_command} ls-files "include/*.h"`;
@include_files = split('\n', $files);
}

@@ -970,7 +971,7 @@ sub git_commit_info {

return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));

- my $output = `git log --no-color --format='%H %s' -1 $commit 2>&1`;
+ my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
$output =~ s/^\s*//gm;
my @lines = split("\n", $output);

@@ -1020,7 +1021,7 @@ if ($git) {
} else {
$git_range = "-1 $commit_expr";
}
- my $lines = `git log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
+ my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
foreach my $line (split(/\n/, $lines)) {
$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
next if (!defined($1) || !defined($2));